Hook coupling structure and case using the same

ABSTRACT

Disclosed is a hook coupling structure and a case using the same. The hook coupling structure for coupling first and second components  20  and  30  to each other includes a latching protrusion  28  protruding from a surface of one of the first and second components  20  and  30  and a hook  32  protruding from the other of the first and second components  20  and  30 , a leading end of the hook  32  engaging with the latching protrusion  28  in a lateral direction relative to a protruding direction of the latching protrusion  28 . The hook  32  has a planar overall shape, and the leading end has a latching step  33  formed on its lateral surface so as to engage with the latching protrusion. When the hook coupling structure is used for a case, the inner space defined by components, which are coupled to each other by the hook, increases. This renders the exterior of the case light, slim, and compact.

BACKGROUND OF THE INVENTION

1. Field of the invention

The present invention relates to a hook coupling structure and a case using the same. More particularly, the present invention relates to a hook coupling structure for removably coupling molded materials and a case using the same.

2. Description of the Prior Art

As generally known in the art, various means are used to couple injection molded materials to each other. For example, screws are used to couple components to each other. Alternatively, a hook and a latching protrusion, which are integrally formed on components, are used to couple the components to each other. FIGS. 1 and 2 show a conventional structure for coupling components to each other by using a hook.

Referring to the drawings, a first component 1, which has been injection-molded, has a latching protrusion 3 formed thereon. Particularly, the latching protrusion 3 protrudes from one side of the first component 1. A second component 5, which is coupled to the first component 1, is provided with a hook 7. Particularly, the hook 7 protrudes a predetermined distance from the second component so as to engage with the latching protrusion 3. The hook 7 has a latching step 7′ formed on its leading end for engagement.

The hook 7 is generally adapted to undergo elastic deformation to some degree so that, when the first and second components 1 and 5 are coupled to each other, the hook 7 is pushed and elastically deformed to a small degree by the latching protrusion 3. Then, the hook 7 restores its original shape. As a result, the latching step 7′ engages with the latching protrusion 3 and causes the first and second components 1 and 5 to be coupled to each other.

However, the above-mentioned conventional structure for coupling components has the following problems.

The latching step 7′ of the hook 7 engages with the latching protrusion 3 in the same direction as the leading end of the latching protrusion 3 protrudes. As a result, the volume of an inner space defined by the components 1 and 5 is reduced. This means that the engagement between the hook 7 and the leading end of the latching protrusion 3 makes it impossible to use the space between a surface of the first component 1, on which the latching protrusion 3 is formed, and the hook 7 (the distance between them is D).

Particularly, when the first and second components 1 and 5 are coupled to each other and shape the exterior of an electronic product, the latching protrusion 3 and the hook 7 must be positioned on both sides of the inner space defined by the first and second components 1 and 5, which are coupled to each other. This means that the width of usable space is reduced by 2D or more.

Meanwhile, a component cover is conventionally used to selectively seal a component seating space, which is defined inside the case. In general, the component cover is elastically deformable so that it can be fastened to and removed from the case. If a large space is reserved for elastic deformation, the volume of the component seating space is undesirably reduced.

In addition, it is necessary to maintain a minimum thickness of the component cover, which is fastened to or removed from the case by using elastic deformation, so that the component cover is neither damaged nor excessively bent by force applied by the user during the elastic deformation. However, such thickness requirement makes it difficult to render the case light, slim, and compact or maximize the volume of the component seating space.

SUMMARY OF THE INVENTION

Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a hook coupling structure having a maximized inner space defined by components coupled to each other.

Another object of the present invention is to provide a light, slim, and compact case.

Another object of the present invention is to provide a case having an inner space which is opened/closed by a cover and which can be used to the fullest extent.

Another object of the present invention is to provide a case having a cover which is adapted to open/close a space defined inside the case and which has a minimum thickness.

In order to accomplish these objects, there is provided a hook coupling structure for coupling first and second components to each other, the structure including a latching protrusion protruding from a surface of one of the first and second components and a hook protruding from other of the first and second components, a leading end of the hook engaging with the latching protrusion in a lateral direction relative to a protruding direction of the latching protrusion.

In accordance with another aspect of the present invention, there is provided a case including a first component; a component seating portion formed in the first component while being exposed to an outside, a component being seated on the component seating portion; a seating platform formed on an edge of an entrance of the component seating portion, the seating platform forming at least a part of an exterior of the first component; and a component cover for selectively covering the component seating portion, wherein the first component has an insertion hole and an insertion slot formed on a part corresponding to an edge of the component seating portion, the component cover has an insertion piece and a slide latching piece formed so as to be inserted into the insertion hole and the insertion slot, respectively, and the component cover has a seating protrusion formed so as to be removably seated into a fastening groove formed on the first component while being elastically deformed together with a periphery so that the component cover is fastened to the first component.

The inventive hook coupling structure and the case using the same are advantageous in that the inner space defined by the components, which are coupled to each other by the hook, increases. This renders the exterior of the case light, slim, and compact. In addition, the component seating space, which is defined inside the case and opened/closed by the component cover, in enlarged. The fact that the component cover has a minimized thickness renders the case light, slim, and compact.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is an exploded perspective view briefly showing the construction of a hook coupling structure according to the prior art;

FIG. 2 is a sectional view showing the construction of a hook coupling structure according to the prior art;

FIG. 3 is an exploded perspective view showing a case equipped with a hook coupling structure according to a preferred embodiment of the present invention;

FIG. 4 is a perspective view briefly showing the construction of a case equipped with a hook coupling structure according to a preferred embodiment of the present invention;

FIG. 5 is a lateral view showing the internal construction of a case equipped with a hook coupling structure according to a preferred embodiment of the present invention;

FIG. 6 is a sectional view briefly showing the construction of a case according to an embodiment of the present invention;

FIG. 7 is an assembled perspective view showing a case according to an embodiment of the present invention;

FIG. 8 is an exploded perspective view showing a case according to another embodiment of the present invention;

FIG. 9 is a partially-broken perspective view briefly showing the construction of the case shown in FIG. 8;

FIG. 10 is a perspective view showing a component cover, which constitutes the case shown in FIG. 8;

FIG. 11 shows the operation of the case shown in FIG. 8, when a component cover is seated thereon; and

FIG. 12 shows the operation of the case shown in FIG. 8, when a component cover is fastened thereto.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description and drawings, the same reference numerals are used to designate the same or similar components, and so repetition of the description on the same or similar components will be omitted.

As shown in the drawings, a first component 20, which acts as a frame constituting a case, has an inner space 22 defined therein. The inner space 22 is delimited by a bottom portion 24 and a lateral wall portion 26 extending along the edge of the bottom portion 24. In the present embodiment, the first component 20 has the shape of a flat hexahedron. The first component 20 has an opening formed on a surface (larger surface) thereof. The bottom portion 24 may be a separate plate removably fastened to the first component 20.

The lateral wall portion 26 has a number of latching protrusions 28 formed on its inner surface. The latching protrusions 28 protrude forward from the inner surface of the lateral wall portion 26. The number and position of the latching protrusions 28 depend on the size of the first component 20.

In addition to the latching protrusions 28, the lateral wall portion 26 may have another type of latching protrusions 28′ formed thereon. The shape of the latching protrusions 28′ may be modified in accordance with that of features coupled thereto (described later).

The second component 30 is coupled to the first component 20 and seals the inner space 22. The second component 30 acts as a front plate of the case, for example. When coupled to each other, the first and second components 20 and 30 constitute a case. The case does not necessarily consist of two components 20 and 30, and more components may be used if necessary. The shape of the components 20 and 30 may be varied as desired. Particularly, although the inner space 22 is defined in the first component 20 in the present embodiment, it may be defined in the second component 30. Alternatively, the inner space may be separately defined in the first and second components 20 and 30.

The second component 30 has planar hooks 32 formed so as to correspond to and engage with the latching protrusions 28. Each planar hook 32 has a latching step 33 formed on one side of its leading end. Particularly, the latching steps 33 are not positioned on a larger surface of the planar hooks 32, but protrude from one side of the leading end of their lateral surface. Preferably, at least the latching steps 33 extend parallel to the surface, on which the latching protrusions 28 are formed. Preferably, the entire planar hooks 32, including the latching steps 33, extend parallel to the surface, on which the latching protrusions 28 are formed. The planar hooks 32 preferably have a thickness equal to or smaller than the degree of protrusion of the latching protrusions 28 so that the planar hooks 32 do not protrude from the latching protrusions 28.

The planar hooks 32 engage with the latching protrusions 28 in the lateral direction of the latching protrusions 28. Particularly, the planar hooks 32 do not engage with the leading ends of the latching protrusions 28 in the same direction as they protrude, but the latching steps 33 engage with the latching protrusions 32 in the lateral direction of the latching protrusions 28.

The second component 30 has protruding hooks 35 constructed according to the prior art. The protruding hooks 35 have a latching step adapted to engage with the leading end of the latching protrusions 28′.

The second component 30 has latching pieces 37 formed thereon. Each latching piece 37 has a latching groove or latching hole 37′ formed thereon so that a protrusion (not shown) formed on the first component 1 is inserted therein and fastened thereto.

According to the present invention, the conventional protruding hooks 35 and latching pieces 37 may be properly combined so as to couple the first and second components 20 and 30 to each other, in addition to the planar hooks 32. Alternatively, the planar hooks 32 may solely be used to couple the first and second components 20 and 30 to each other. If necessary, depending on the design requirement of the first and second components 20 and 30, the planar hooks 32, the protruding hooks 35, and the latching pieces 37 may be properly arranged.

The operation of the inventive hook coupling structure, which is constructed as above, and a case using the same will now be described in detail.

FIG. 7 shows the first and second components 20 and 30, which are coupled to each other by the inventive hook coupling structure. Particularly, the first and second components 20 and 30 constitute a case, which shapes the exterior of an electronic device.

The latching steps 33, which are formed on one side of the leading end of the planar hooks 32, engage with the latching protrusions 28 of the first component 20 in the lateral direction of the latching protrusions 28. After the engagement, the planar hooks 32 are positioned adjacent to or forced against the inner surface of the first component 20, particularly the lateral wall portion 26, as shown in FIG. 6. In this condition, the planar hooks 32 do not protrude from the latching protrusions 28.

The fact that the planar hooks 32 do not protrude from the latching protrusions 28 means that, when the first and second components are coupled to each other, the usable volume of the inner space 22 increases.

The first and second components 20 and 30 are fastened to each other when the planar hooks 32, the protruding hooks 35, and the latching pieces 37 engage with the latching protrusions 28 and 28′ and the protrusions. The position and number of the planar hooks 32, the protruding hooks 35, and the latching pieces 37 depend on the design requirement. For example, the planar hooks 32 or the latching pieces 37 are used when a large volume is necessary, and the protruding hooks 35 are used otherwise.

As such, the planar hooks 32, the protruding hooks 35, and the latching pieces 37 are properly combined and used to establish a case based on their characteristics, including the ratio of occupation in the inner space and fastening strength.

FIGS. 8 to 10 show a case according to another embodiment of the present invention. The case 115 shapes the exterior of a portable terminal. The case 115 has the shape of a flat hexahedron, with its vertical width larger than the horizontal width when viewed from the front. In general, the case 115 may consist of at least two components. In the present embodiment, the case 115 has a first component 120 acting as a framework and a third component 120′ mounted on the first component 120. For example, the first component 120 is the frame of the case 115, and the third component 120′ is a rear plate. It can be easily understood by those skilled in the art that the case according to the present embodiment is shown in the drawings from below.

A portion of the first component 120, which corresponds to the rear surface of the terminal, is dented so as to form a component seating portion 122. Particularly, the component seating portion 122 is formed by denting a portion the rear surface of the case 115, which is adjacent to an end thereof, in the shape of a hexahedron. For example, a battery (not shown) may be seated on the component seating portion 122 and supply the terminal with power.

The component seating portion 122 has a seating platform 124 formed on a portion of its rim, which corresponds to the edge of the case 115. The edge of a component cover 140 (described later) is seated on the seating platform 124.

The component seating portion 122 has an insertion hole 126 formed on at the center of the remaining portion of the rim (i.e. the portion which has no seating platform 124). In the present embodiment, the insertion hole 126 is formed on the first component 120. The insertion hole 126 is open in the same direction as the component cover 140 (described later) is fastened/removed.

A stopping platform 128 protrudes from an edge of the seating platform 124, which faces the insertion hole 126 formed on the component seating portion 122. The stopping platform 128 has an insertion hole 128′ formed thereon. An insertion piece 145 (described later) is inserted into the insertion hole 128′. The insertion hole 128′ is open in the same direction as the component cover 140 is fastened/removed.

Protruding ribs 130 protrude along the edge the seating platform 124, which corresponds to both ends of the case 115. The protruding ribs 130 are elongated in the same direction as the component cover 140 is fastened/removed. A slide latching protrusion 130′ extends along the outer surface of each protruding rib 130. In the present embodiment, two slide latching protrusions 130′ are formed on each protruding rib 130 (i.e. a total of four). However, the number of the slide latching protrusions 130′ is not limited to that in the present invention, and may be varied depending on the design requirement. The slide latching protrusions 130′ extend along the lateral surface of the protruding ribs 130 and protrude in a direction perpendicular to the extension direction of the protrusion ribs 130.

A part of each slide latching protrusion 130′ is removed so as to form latching slots 130″ between the slide latching protrusions 130′ and the seating platform 124. Slide latching pieces 147 of a battery cover 136 (described later) are inserted into the latching slot 130″. When viewed from the side of the case 115 (refer to FIG. 11), the slide latching protrusions 130′ have an approximately L-shape configuration, due to the latching slots 130″.

The protruding ribs 130 have insertion slots 131 formed so as to correspond to respective entrances of the latching slots 130″ of the slide latching protrusions 130′ (refer to FIG. 11). The insertion slots 131 have a width large enough to enable the slide latching pieces 147 (described later) to pass through.

Each protruding rib 130 has a fastening protrusion 133 formed on a portion thereof, which corresponds to an end of the case 115. The fastening protrusion 133 has a curved surface, which corresponds to the leading end of the protruding rib 130. Next to the fastening protrusion 133, each protruding rib 130 has a fastening groove 134 formed on its outer surface. A seating protrusion 150 (not shown) of the component cover 140 is seated into and engages with the fastening groove 134.

The component cover 140 selectively covers the component seating portion 122. When mounted on the case 115, the component cover 140 covers the component seating portion 122. The component cover 140 includes a planar portion 141 having the shape of a square plate and a lateral wall portion 143 enclosing the edge of the planar portion 141 so as to correspond to the seating platform 124.

The planar portion 141 has an insertion piece 142 protruding from the center of an edge, on which the lateral wall portion 143 is not formed. The insertion piece 142 is inserted into the insertion hole 126. The lateral wall portion 143 has an insertion piece 145 formed on its portion, which faces the edge having the insertion piece 142. The insertion piece 145 is inserted into the insertion hole 128′ formed on the stopping platform 128. The insertion pieces 142 and 145 extend in the same direction as the component cover 140 is fastened/removed.

The lateral wall portion 143 has slide latching pieces 147 formed on portions of its inner surface, which correspond to both ends of the component cover 140. The slide latching pieces 147 engage with the slide latching protrusions 130′. The slide latching pieces 147 have insertion portions 148 inserted into the latching slots 130″ of the slide latching protrusions 130′ and stopping portions 149 formed on an end of the insertion portions 148. The slide latching pieces 147 have an approximately L-shaped configuration, as in the case of the slide latching protrusions 130′.

The lateral wall portion 143 has seating protrusions 150 formed on its portions, which correspond to both ends of the component cover 140, respectively. The seating protrusions 150 are seated into the fastening grooves 134. When the seating protrusions 150 climb and move past the fastening protrusions 133, they undergo slight elastic deformation together with the lateral wall portion 143. Preferably, the seating protrusions 150 have curved surfaces, which abut the fastening pieces 133, so that the seating protrusions 150 can easily climb and move past the fastening pieces 133.

The operation of the case of a portable terminal according to the present embodiment of the present invention, which is constructed as above, will now be described in detail.

The component cover 140 covers the component seating portion 122, particularly, components seated thereon, and prevents them from escaping. The insertion pieces 142 and 145 are inserted into the insertion holes 126 and 128′, respectively, and the slide latching pieces 147 engage with the slide latching protrusions 130′, so that the component cover 140 is not separated from the case 115. Although the insertion pieces 142 and 145 and the sliding latching pieces 147 cannot prevent the component cover 140 from moving towards an end of the case 115, they can prevent the component cover 140 from escaping towards the top of the component seating portion 112 or moving in the lateral direction.

The component cover 140 is fixedly mounted on the case 115 when the seating protrusions 150 move past the fastening protrusions 133 and are seated into the fastening grooves 134. Particularly, the component cover 140 remains fixed to the case 115 as long as the seating protrusions 150 cannot escape from the fastening grooves 134 unintentionally.

When the user wants to remove the case 115 from the battery cover 140 in this state, he slightly presses portions of the planar portion 141 of the component cover 140, which are adjacent to the seating protrusions 150. As a result, the periphery of those portions is elastically deformed so that the seating protrusions 150 can easily climb and move past the fastening protrusions 133.

When the user pushes the component cover 140 towards the end of the case 115, the insertion pieces 142 and 145 are separated from the insertion holes 126 and 128′, and the slide latching pieces 147 are separated from the slide latching protrusions 130′. Then, the component cover 140 is separable from the case 115.

A process for remounting the component cover 140 on the case 115 will now be described with reference to FIGS. 11 and 12.

Once the component cover 140 is separated from the case 115 in order to replace or check a component inside the component seating portion 122, the component cover 140 is positioned above the component seating portion 122 so as to cover it. However, the component cover 140 does not completely cover the component seating portion 124 in this condition, and a part of the component seating portion 124, which is adjacent to the insertion pieces 142, may be exposed.

As shown in FIG. 11, the seating protrusions 150 are adjacent to the fastening protrusions 133, and the slide latching pieces 147 are positioned so as to correspond to the insertion slots 131. In this state, the lateral wall portion 143 of the component cover 140 is moved along the seating platform 124, particularly along the arrow shown in FIG. 11.

As a result of the movement of the component cover 140, the insertion portions 148 of the slide latching pieces 147 are inserted into the latching slots 130″. In addition, the slide latching pieces 147 climb and move past the fastening protrusions 133 to be seated into the fastening grooves 134, while the lateral wall portion 143 of the component cover 140 undergoes elastic deformation.

After the insertion portions 148 are inserted into the latching slots 130″ and the stopping portions 149 engage with the slide latching protrusions 130′, the component cover 140 stops moving, as shown in FIG. 12. The insertion pieces 142 and 145 are inserted into the insertion holes 126 and 128′, respectively, so that the component cover 140 is neither displaced nor separated from the case 115 unintentionally.

As mentioned above, the inventive hook coupling structure and the case using the same have the following advantages.

The hook coupling structure uses a minimum space to couple the hook and the latching protrusion to each other. This maximizes the inner space defined when components having hooks and latching protrusions are coupled to each other. As a result, the inventive hook coupling structure makes it possible to install a larger number of components in a space defined therein.

When the inventive hook coupling structure is used for a case, which shapes the exterior of an electronic device, the size of the contour of the case can be minimized while the inner volume remains the same. This renders the case light, slim, and compact. Therefore, when the case is used for a portable terminal, for example, the portability is improved.

According to the present invention, the planar portion of the component cover does not necessarily undergo elastic deformation when the cover is fastened/removed. This means that no gap is necessary between the component cover and the component. As a result, the volume of the component seating portion can be used to the fullest extent. This makes it possible to maximize the component capacity or render the case light, slim, and compact.

In addition, the component cover may have a small thickness, because its planar portion is not subjected to force from the user when the component cover is fastened/removed. This maximizes the volume of the component seating portion. As a result, it is possible to maximize the component capacity or render the case light, slim, and compact.

Although a preferred embodiment of the present invention has been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

For example, although the planar hooks 32, the protruding hooks 35, and the latching pieces 37 are positioned on the second component 30, while corresponding latching hooks 28 and 28′ and protrusions are positioned on the first component 20 in the illustrated embodiment, the positioning is not limited to that in the present invention. For example, the above elements may be positioned on the other component. Alternatively, they may be positioned on the first and second components 20 and 30 in various combinations.

In addition, the present invention is applicable to all type of portable terminals, including portable telephones, PDAs, smart phones, PMCs, and PMPs. 

1. A hook coupling structure for coupling first and second components to each other, the structure comprising: a latching protrusion protruding from a surface of one of the first and second components and a hook protruding from other of the first and second components, a leading end of the hook engaging with the latching protrusion in a lateral direction relative to a protruding direction of the latching protrusion.
 2. The hook coupling structure as claimed in claim 1, wherein the hook has a planar overall shape, and the leading end has a latching step formed on a lateral surface, the latching step engaging with the latching protrusion.
 3. The hook coupling structure as claimed in claim 2, wherein the hook has a thickness equal to or smaller than degree of protrusion of the latching protrusion.
 4. The hook coupling structure as claimed in claim 1, wherein the hook extends parallel to the surface of one of the first and second components, the latching protrusion protruding from the surface.
 5. A case comprising: first and second components coupled to each other for defining an inner space and at least one hook coupling structure as claimed in any one of claims 1-4.
 6. The case as claimed in claim 5, wherein the first component has a lateral wall portion formed along an edge of a bottom portion so as to define the inner space, and the second component is coupled to the first component so as to define the inner space.
 7. The case as claimed in claim 6, further comprising: a latching protrusion protruding from a surface of one of the first and second components so as to couple the first and second components to each other; a protruding hook formed on other of the first and second components so as to engage with the latching protrusion at a leading end of the latching protrusion; and a latching piece formed on the other of the first and second components so as to engage with the latching protrusion.
 8. The case as claimed in claim 5, wherein a component seating portion is formed in the first component while being exposed to an outside so that a component is seated on the component seating portion; a component cover for selectively covering the component seating portion is provided and adapted to slide in a direction for mounting; insertion holes are formed on opposite edges of the component seating portion, respectively, while being open in a fastening/removing direction of the component cover; protruding ribs are formed on both lateral of the component seating portion, respectively, in the fastening/removing direction of the component cover; slide latching protrusions and fastening protrusions are formed on an outer surface of the protruding ribs; insertion pieces are formed on corresponding edges of the component cover and inserted into the insertion holes, respectively; slide latching pieces and seating protrusions are positioned so as to correspond to ends of the protruding ribs; the slide latching pieces are adapted to engage with the slide latching protrusions; and the seating protrusions are adapted to elastically deform and move past the fastening protrusions so that the seating protrusions are seated into fastening grooves formed on the protruding ribs.
 9. The case as claimed in claim 8, wherein a seating platform is formed on a portion of an edge of the component seating portion, the portion corresponding to an edge of the first component; the protruding ribs extend on portions of the seating platform, the portions corresponding to both ends of the first component, in the fastening/removing direction of the component cover; a stopping platform is formed on a portion of the seating platform, the portion corresponding to an end of the first component, in a direction perpendicular to the fastening/removing direction of the component cover; and the insertion holes are open to the stopping platform in the fastening/removing direction of the component cover.
 10. The case as claimed in claim 9, wherein the component cover has a planar portion for covering the component seating portion and a lateral wall portion extending along an edge of the planar portion while corresponding to the seating platform.
 11. The case as claimed in claim 10, wherein insertion pieces extend on an edge of the lateral wall portion, the edge corresponding to the stopping platform, and an opposite edge facing the edge, respectively, in the fastening/removing direction of the component cover, and the slide latching pieces are formed on portions of the lateral wall portion, the portions corresponding to the protruding ribs.
 12. A case comprising: a first component; a component seating portion formed in the first component while being exposed to an outside, a component being seated on the component seating portion; a seating platform formed on an edge of an entrance of the component seating portion, the seating platform forming at least a part of an exterior of the first component; and a component cover for selectively covering the component seating portion, wherein the first component has an insertion hole and an insertion slot formed on a part corresponding to an edge of the component seating portion, the component cover has an insertion piece and a slide latching piece formed so as to be inserted into the insertion hole and the insertion slot, respectively, and the component cover has a seating protrusion formed so as to be removably seated into a fastening groove formed on the first component while being elastically deformed together with a periphery so that the component cover is fastened to the first component.
 13. The case as claimed in claim 12, wherein the component cover has a planar portion for covering the component seating portion and a lateral wall portion extending along an edge of the planar portion while corresponding to the seating platform, and the insertion piece and the slide latching piece extend along an edge of the component cover in a fastening/removing direction of the component cover.
 14. The case as claimed in claim 13, wherein protruding ribs extend on portions of the seating platform, the portions corresponding to both ends of the first component, in the fastening/removing direction of the component cover, respectively, and the protruding ribs have a slide latching protrusion formed so as to engage with the slide latching piece.
 15. The case as claimed in claim 14, wherein the protruding ribs have a latching slot formed so as to engage with the slide latching piece by means of the slide latching protrusion and an insertion slot formed on an entrance of the latching slot with a width so that the slide latching piece can be inserted into the insertion slot.
 16. The case as claimed in claim 14, wherein the fastening groove is formed on a portion of the protruding ribs, the portion corresponding to an end of the first component, by means of a fastening protrusion.
 17. The case as claimed in claim 13, wherein a stopping platform is formed on the seating platform of the first component in a direction perpendicular to the fastening/removing direction of the component cover, an insertion hole is formed on the stopping platform while being open in the fastening/removing direction of the component cover so that the insertion piece of the component cover is inserted into the insertion hole, and an insertion hole is formed on an edge of the component seating portion, the edge facing the stopping platform, while being open in the fastening/removing direction of the component cover so that a different insertion piece of the component cover is inserted into the insertion hole. 